Does not work for NAND locked devices, such as the HTC Desire or Evo.
See the xda forum link for further information.
Force unroot option: If you previously tried to root and are now stuck with a non-working superuser app, this option will remove it for you.
Temporary root option: If your device cannot support a permanent root (NAND locked, Older RFS) then this option will allow you to temporary root your device until the next reboot.
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